Carl hamann



(No Model.)

0. HAMANN. 'DRIVING GEAR.

No. 527,552. Patented Oct. 16,1894;

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j NITED STATES PATENT OFFICE.

CARL HAMANN, OF REINBEOK, GERMANY.

DRIVING-GEAR.

SPECIFICATION forming part of Letters Patent No. 527,552, dated October16, 1894. Application filed June 8, 1894, Serial No. 513,914. (Nomodel.)

To @all whom it may concern:

Be it known that I, CARL HAMANN, a subject of the Emperor of Germany,and a resident of Reinbeck, Prussia, Germany, have invented a certainnew and useful Improvement in Driving-Gears, of which the following is aspecification. l

Figures 1 and 2 are side views of two differently proportioned examplesof, my invention. Fig. 3 is a plan view corresponding with Fig. 2.

This gearing is adapted for the transmis sion of great power andcomprises a rotarily j ournaled wheel or disk a, having in each sidenear its periphery rollers r fr turning on gudgeons t' t', those 'r onthe one side standing in an intermediate position to those fr on theother side. The gearing further comprises a double tappet turning in asingle shaft m, the two tappets being spirally shaped and situated oneon each side of the wheel a so as to come in contact with the rollersofthe respective wheel sides, as is shown in the accompanying drawings.The shapes of the tappets are` such that as soon as the one of them (b)leaves the roller r, which it has driven forward, the

other o on the other side of the wheel, comes into contact with a rollerfr", and drives the latter forward, whereupon the first tappet v againcomes into contact with a roller r, and 3o so on. There must in anycase'be an absolutely uniform movement of the wheel a.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A gearing consisting 'of a rotarily journaled Wheel a provided onopposite sides near the periphery with rollers rr turning on gudgeons t'fi', those on the one side having positions alternating with those onthe other side, and two tappets h b having a common axle m, the saidtapp'ets being spirally shaped and arranged at opposite sides of thewheel to operate successively on the rollers r 'r' on each side thereof,substantially as herein set for th.

In witness whereof I have hereunto set my hand in presence of twowitnesses. v

CARL I-IAMANN.

Witnesses:

A. SGHAPER,

W. MEINECKE.

